LAUSR

INTRODUCTION Opioid use disorder and high-risk opioid prescription increase the risks for overdose and death. In Veterans, military sexual trauma is associated with increased risk for assorted health conditions. This study evaluates the association of military sexual trauma with opioid use disorder and high-risk opioid prescription and potential moderation by gender. METHODS In a national sample of Veterans Health Administration outpatients receiving care from October 1, 2009 to August 1, 2017, logistic regression models were fit to evaluate the associations between military sexual trauma and opioid use disorder and high-risk opioid prescription, adjusting for demographic and clinical covariates. A second set of models included a gender X military sexual trauma interaction. Analyses were conducted in 2020-2021. RESULTS Patients with history of military sexual trauma (n=327,193) had 50% higher odds of opioid use disorder diagnosis (AOR=1.50, 95% CI=1.45, 1.54, p<0.001) and 5% higher odds of high-risk opioid prescription (AOR=1.05, 95% CI=1.04, 1.07, p<0.001) than those without history of military sexual trauma (n=7,738,665). The effect of military sexual trauma on opioid use disorder was stronger in men than in women . The predicted probability of opioid use disorder among men with history of military sexual trauma (1.5%) was nearly double that of women with history of military sexual trauma (0.8%). CONCLUSIONS Military sexual trauma was a significant risk factor for opioid use disorder and high-risk opioid prescription, with the former association particularly strong in men. Clinical care for Veterans with military sexual trauma should consider elevated risk of opioid use disorder and high-risk opioid prescription.